Geotechnical engineering surveying device

The utility model relates to the field of geotechnical engineering surveying, in particular to a geotechnical engineering surveying device which comprises a supporting disc, a rotating rod, a connecting rod and a rotating block. A motor is arranged on the supporting disc, and the driving end of the motor penetrates through the supporting disc and is provided with a drill rod; the three rotating rods are rotationally arranged on the outer side of the supporting disc, a limiting barrel is arranged at the bottom of the supporting disc, and the drill rod is arranged in the limiting barrel; the three connecting rods are rotationally arranged on the inner sides of the three rotating rods correspondingly, the limiting barrel is sleeved with the sleeve in a sliding mode, and the three connecting rods are rotationally connected to the exterior of the sleeve; the three rotating blocks are rotationally arranged at the bottom ends of the three rotating rods correspondingly, two pulleys are rotationally arranged at one en